UnrealEngineUWP/Engine/Source/Editor/BlueprintGraph/Private/K2Node_InputAxisKeyEvent.cpp

// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.

#include "BlueprintGraphPrivatePCH.h"
#include "K2Node_InputAxisKeyEvent.h"
#include "CompilerResultsLog.h"

UK2Node_InputAxisKeyEvent::UK2Node_InputAxisKeyEvent(const class FPostConstructInitializeProperties& PCIP)
: Super(PCIP)
{
	bConsumeInput = true;
	bOverrideParentBinding = true;
	bInternalEvent = true;

	EventSignatureName = TEXT("InputAxisHandlerDynamicSignature__DelegateSignature");
	EventSignatureClass = UInputComponent::StaticClass();
}

void UK2Node_InputAxisKeyEvent::Initialize(const FKey InAxisKey)
{
	AxisKey = InAxisKey;
	CustomFunctionName = FName(*FString::Printf(TEXT("InpAxisKeyEvt_%s_%s"), *AxisKey.ToString(), *GetName()));
}

FText UK2Node_InputAxisKeyEvent::GetNodeTitle(ENodeTitleType::Type TitleType) const
{
	return AxisKey.GetDisplayName();
}

FString UK2Node_InputAxisKeyEvent::GetNodeNativeTitle(ENodeTitleType::Type TitleType) const
{
	// Do not setup this function for localization, intentionally left unlocalized!
	return AxisKey.GetDisplayName().ToString();
}

FString UK2Node_InputAxisKeyEvent::GetTooltip() const
{
	return FString::Printf(*NSLOCTEXT("K2Node", "InputAxisKey_Tooltip", "Event that provides the current value of the %s axis once per frame when input is enabled for the containing actor.").ToString(), *AxisKey.GetDisplayName().ToString());
}

void UK2Node_InputAxisKeyEvent::ValidateNodeDuringCompilation(class FCompilerResultsLog& MessageLog) const
{
	Super::ValidateNodeDuringCompilation(MessageLog);

	if (!AxisKey.IsValid())
	{
		MessageLog.Warning(*FText::Format(NSLOCTEXT("KismetCompiler", "Invalid_InputAxisKey_Warning", "InputAxisKey Event specifies invalid FKey'{0}' for @@"), FText::FromString(AxisKey.ToString())).ToString(), this);
	}
	else if (!AxisKey.IsFloatAxis())
	{
		MessageLog.Warning(*FText::Format(NSLOCTEXT("KismetCompiler", "NotAxis_InputAxisKey_Warning", "InputAxisKey Event specifies FKey'{0}' which is not a float axis for @@"), FText::FromString(AxisKey.ToString())).ToString(), this);
	}
	else if (!AxisKey.IsBindableInBlueprints())
	{
		MessageLog.Warning(*FText::Format(NSLOCTEXT("KismetCompiler", "NotBindable_InputAxisKey_Warning", "InputAxisKey Event specifies FKey'{0}' that is not blueprint bindable for @@"), FText::FromString(AxisKey.ToString())).ToString(), this);
	}
}

UClass* UK2Node_InputAxisKeyEvent::GetDynamicBindingClass() const
{
	return UInputAxisKeyDelegateBinding::StaticClass();
}

FName UK2Node_InputAxisKeyEvent::GetPaletteIcon(FLinearColor& OutColor) const
{
	if (AxisKey.IsMouseButton())
	{
		return TEXT("GraphEditor.MouseEvent_16x");
	}
	else if (AxisKey.IsGamepadKey())
	{
		return TEXT("GraphEditor.PadEvent_16x");
	}
	else
	{
		return TEXT("GraphEditor.KeyEvent_16x");
	}
}

void UK2Node_InputAxisKeyEvent::RegisterDynamicBinding(UDynamicBlueprintBinding* BindingObject) const
{
	UInputAxisKeyDelegateBinding* InputAxisKeyBindingObject = CastChecked<UInputAxisKeyDelegateBinding>(BindingObject);

	FBlueprintInputAxisKeyDelegateBinding Binding;
	Binding.AxisKey = AxisKey;
	Binding.bConsumeInput = bConsumeInput;
	Binding.bExecuteWhenPaused = bExecuteWhenPaused;
	Binding.bOverrideParentBinding = bOverrideParentBinding;
	Binding.FunctionNameToBind = CustomFunctionName;

	InputAxisKeyBindingObject->InputAxisKeyDelegateBindings.Add(Binding);
}

bool UK2Node_InputAxisKeyEvent::CanPasteHere(const UEdGraph* TargetGraph, const UEdGraphSchema* Schema) const
{
	// By default, to be safe, we don't allow events to be pasted, except under special circumstances (see below)
	bool bAllowPaste = false;

	// Ensure that we can be instanced under the specified schema
	if (CanCreateUnderSpecifiedSchema(Schema))
	{
		// Can only place events in ubergraphs
		if (Schema->GetGraphType(TargetGraph) == EGraphType::GT_Ubergraph)
		{
			// Find the Blueprint that owns the target graph
			UBlueprint* Blueprint = FBlueprintEditorUtils::FindBlueprintForGraph(TargetGraph);
			if (Blueprint && Blueprint->SkeletonGeneratedClass)
			{
				bAllowPaste = Blueprint->ParentClass->IsChildOf(AActor::StaticClass());
				if (!bAllowPaste)
				{
					UE_LOG(LogBlueprint, Log, TEXT("Cannot paste event node (%s) directly because the graph does not belong to an Actor."), *GetFName().ToString());
				}
			}
		}
	}
	else
	{
		UE_LOG(LogBlueprint, Log, TEXT("Cannot paste event node (%s) directly because it cannot be created under the specified schema."), *GetFName().ToString());
	}

	return bAllowPaste;
}